Vacuum governor



d. v23, i923. www@ R. BURCH ETT VACUUM GOVERNOR Filed June 1s. 1921 ATTORNE Y.

Patented @et 23, i823..

unten stares ROY BURCHETT, OF

VACUUM Application led .Tune 16, 1921.

To all whom t may concern:

Be it known that I, ROY 'BURCHETL citizen of United States, residing atSeiling, in the county of Dewey and State of Oklahoma, have inventedcertain new and useful Improvements in Vacuum Governors, of which thefollowing is a specification.

The invention has reference to governors erable to open or close thethrottle-valve in accordance with the degree of suction or vacuumcreated within the manifold at any given time. j

A11 additional object is to provide governing means of the characterreferred to which embodies a. floating member adapted to be both springactuated or vacuum controlled whereby it is rendered highly sensitive toany variation or change in the suction or vacuum of the manifold.

With the above and other objects in view, the invention may besaidgenerally to reside in the details of construction, combination andarrangement of parts as will be hereinaftel` more fully pointed out,reference being had to the accompanying drawings, whereini Figure 1 is aview disclosing the manner of applying the invention to the manifold,the said invention being partly in section to show the movable piston;and Fig.` 2, a cross section of the manifold taken on line 2-2 of Figure1 and disclosing the throttlevalve.

In the drawings, numeral 1 indicates the intake manifold of an internalcombustion engine such as usually extends from the carburetor to themotor and which is provided with a throttle valve 2 as illustrated,which serves to control the amount of fuel passing through the manifold.In applying the invention, the same is connected to the manifold betweenthe throttle valve and motor,

'and functions in the capacity of a governorl for regulating anddirecting the action of the throttle valve for maintaining uniformengine speed. The suction created in the manifold by the formation ofthevacuum tenses aria asics.

SEILING, OKLAHOMA.

GOVERNOR.

Serial No. 478,111.

varies in intensity as the speed of the engine increases or decreases,and as the governing means is communicated directly with theintakemanifold, Ait is sensitive to any varia- -tion in-pressure orsuction occurring in the manifold and automatically operates to adjustthe throttle valve accordingly. The invention includes a cylinder ,3having one end connected tothe manifold by communication is a piston 8having thepiston `rod `9 slidabl'e thru the cylinder head and' enclosedwithin uard casing 6.v Secured to the end of rod 9,

y means of adjusting nuts 10 and 11, is one terminal of a link 12 whichhas its other ter'- i 75 ver 13, the latter being pivoted to bracketminal fastened to one arm of bell crank le- 14 carried by the cylinder.The other end of lever 13 is connected, by link 15 to throttle valve 2so that the latter will be operated to open or close as the pist-onmoves to and fro in the cylinder. The piston is normally held at'theupper or casing end of the cylinder by means of a cone-shaped governor,spring 16 seated in spring seat 17 of t-he cy'inder head and embracinpiston rod9 between the head of the cyIinder and adjusting nuts 10 and11; this spring being tensioned to resist, up to a lgiven limit, thepull or suction exerted on the piston from the intake manifold. Betweenthe head and piston, rod 9 is encircled by a bumper spring 18 whichserves as a cushion for the piston in case the motor backfiresv throughthe carburetor and manifold;

In operation, if spring 16is properly adjusted to. the normal speed ofthe motor, piston 8 will practically remain stationary in the cylinderwhen the engine is running idle. However, when the clutch is engaged andthe speed of the engine thereby checked. there will be a correspondingdecrease of vacuum in manifold 1 and cylinder 3, permitting spring 16 toraise piston 8 for opening the throttle and admitting mbre fuel to -theen 'ne. On the other hand, when the clutch 1s disengaged the enginespeeds up instantly, increasing the vacuum in cylinder 3 so that piston8 is drawn downwardly. compressing spring 16 and closing the throttle.

In this way the throttle is alternately opened #110 and closed tofregulatethef lanlouiit `offuel r. pipe 4 and its other end'isprovidedqvith ay ead or cap 5 carrying the casing16'. Cas"A ing 6 isprovided with a door `Tas shown Mounted to'reciprocate within thecylinder -f vEso ioo j passing int-o'the engine Yfromv the intakemanifold as variations in the engines speed. may occur, consequentlyenabling the engine to be operated at a uniform speed.

The foregoing description and accompanying drawings have reference towhat might be considered to be the ap roved or preferred form of myinvention. desire it to be understood, however', that il may make suchchanges in the construction, combination and arrangement of parts,materials, dimensions, et cetera, as may prove expedient and fall Withinthe scope of the appended claim. v

Having thus described my invention, what l claim as new and desire tosecure by Letters Patent is T he combination With a fuel intake menifoldhaving a throttle valve therein; of a Laarne@ vacuum casin havingcommunication with the interior o the manifold, a piston therein adaptedto be drawn toward one end of the casing b suction created in themanifold, a stem or the piston extending through one end of the casing,a coil spring associated With the stem on each side of the end of saidcasing, a bracket carried by the casing, a bell crank lever pivotallyconnected thereto, a rod connected to one arm of the bell crank atoneend having its opposite end angularly disposed to be connected to thepist ton stem, and a rod connecting the other arm of the bell crank tothe throttle valve. RY BURCHJE'JFT., Witnesses:

Roi? D. Bnnonnaavr, l liionnncn Firmen.,

